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linux/drivers/iio/adc
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Hans de Goede fa2849e964 iio: adc: axp288: Drop bogus AXP288_ADC_TS_PIN_CTRL register modifications 
For some reason the axp288_adc driver was modifying the
AXP288_ADC_TS_PIN_CTRL register, changing bits 0-1 depending on
whether the GP_ADC channel or another channel was written.

These bits control when a bias current is send to the TS_PIN, the
GP_ADC has its own pin and a separate bit in another register to
control the bias current.

Not only does changing when to enable the TS_PIN bias current
(always or only when sampling) when reading the GP_ADC make no sense
at all, the code is modifying these bits is writing the entire register,
assuming that all the other bits have their default value.

So if the firmware has configured a different bias-current for either
pin, then that change gets clobbered by the write, likewise if the
firmware has set bit 2 to indicate that the battery has no thermal sensor,
this will get clobbered by the write.

This commit fixes all this, by simply removing all writes to the
AXP288_ADC_TS_PIN_CTRL register, they are not needed to read the
GP_ADC pin, and can actually be harmful.

Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Acked-by: Chen-Yu Tsai <wens@csie.org>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
 		2017-01-10 19:54:57 +00:00
..
Kconfig iio: adc: New driver for TI ADS7950 chips 2016-12-03 09:57:21 +00:00
Makefile iio: adc: New driver for TI ADS7950 chips 2016-12-03 09:57:21 +00:00
ad799x.c iio: ad799x: Fix buffered capture for ad7991/ad7995/ad7999 2016-08-15 15:39:14 +01:00
ad7266.c iio: devm_regulator_get_optional never returns NULL 2016-09-05 21:09:38 +01:00
ad7291.c iio: adc: add missing of_node references to iio_dev 2016-07-03 13:40:08 +01:00
ad7298.c iio: adc: ad7298: use iio helper function to guarantee direct mode 2016-07-24 19:58:42 +01:00
ad7476.c iio: adc: add missing of_node references to iio_dev 2016-07-03 13:40:08 +01:00
ad7766.c iio:adc: ad7766: testing the wrong variable in probe 2016-11-12 14:35:21 +00:00
ad7791.c iio: adc: add missing of_node references to iio_dev 2016-07-03 13:40:08 +01:00
ad7793.c iio: adc: ad7793: use iio helper function to guarantee direct mode 2016-07-24 19:58:41 +01:00
ad7887.c iio: adc: add missing of_node references to iio_dev 2016-07-03 13:40:08 +01:00
ad7923.c iio: adc: add missing of_node references to iio_dev 2016-07-03 13:40:08 +01:00
ad_sigma_delta.c
…
at91-sama5d2_adc.c Merge 4.6-rc7 into staging-next 2016-05-09 13:20:04 +02:00
at91_adc.c iio: adc: at91: add suspend and resume callback 2016-11-05 16:33:00 +00:00
axp288_adc.c iio: adc: axp288: Drop bogus AXP288_ADC_TS_PIN_CTRL register modifications 2017-01-10 19:54:57 +00:00
bcm_iproc_adc.c iio: Add driver for Broadcom iproc-static-adc 2016-07-03 11:32:30 +01:00
berlin2-adc.c iio:adc:berlin2-adc: coding style cleanup 2015-08-12 22:13:57 +01:00
cc10001_adc.c iio:core: timestamping clock selection support 2016-06-30 19:41:38 +01:00
da9150-gpadc.c iio: Add support for DA9150 GPADC 2015-02-25 21:05:26 +01:00
envelope-detector.c iio: envelope-detector: ADC driver based on a DAC and a comparator 2016-11-13 13:07:17 +00:00
exynos_adc.c IIO: Change msleep to usleep_range for small msecs 2016-12-03 08:58:40 +00:00
fsl-imx25-gcq.c iio: adc: imx25-gcq: Fix module autoload 2017-01-10 19:54:56 +00:00
hi8435.c iio: adc: add missing of_node references to iio_dev 2016-07-03 13:40:08 +01:00
imx7d_adc.c iio: adc: add IMX7D ADC driver support 2015-12-12 16:25:41 +00:00
ina2xx-adc.c iio:kfifo_buf header include push down. 2017-01-10 19:54:53 +00:00
lp8788_adc.c
…
lpc18xx_adc.c iio: adc: add NXP LPC18xx ADC driver 2016-03-12 18:11:48 +00:00
ltc2485.c iio: adc: ltc2485: add support for Linear Technology LTC2485 ADC 2016-08-29 16:57:40 +01:00
max1027.c iio:max1027: Use iio_trigger_validate_own_device() helper 2016-09-27 20:33:00 +01:00
max1363.c iio: adc: add missing of_node references to iio_dev 2016-07-03 13:40:08 +01:00
mcp320x.c iio: adc: add missing of_node references to iio_dev 2016-07-03 13:40:08 +01:00
mcp3422.c iio: adc: add missing of_node references to iio_dev 2016-07-03 13:40:08 +01:00
men_z188_adc.c iio: adc: men_z188_adc: constify iio_info structures 2016-09-18 11:58:31 +01:00
mt6577_auxadc.c iio: adc: mt2701: Add Mediatek auxadc driver for mt2701. 2016-08-21 19:54:30 +01:00
mxs-lradc.c iio: mxs-lradc: disable only masked channels in mxs_lradc_hw_stop 2016-05-04 10:44:28 +01:00
nau7802.c iio: adc: Use complete() instead of complete_all() 2016-08-15 18:01:27 +01:00
palmas_gpadc.c iio: adc: palmas: Drop IRQF_EARLY_RESUME flag 2016-02-27 17:20:52 +00:00
qcom-spmi-iadc.c iio: iadc: wait_for_completion_timeout time in jiffies 2015-01-10 11:43:26 +00:00
qcom-spmi-vadc.c iio: adc: spmi-vadc: Changes to support different scaling 2016-12-10 17:28:21 +00:00
rockchip_saradc.c iio: adc: rockchip_saradc: reset saradc controller before programming it 2016-08-23 19:05:03 +01:00
stm32-adc-core.c iio: adc: Add support for STM32 ADC core 2016-11-19 12:17:45 +00:00
stm32-adc-core.h iio: adc: Add support for STM32 ADC core 2016-11-19 12:17:45 +00:00
stm32-adc.c iio: adc: Add support for STM32 ADC 2016-11-19 12:18:33 +00:00
stx104.c Second set of iio new device support, features and cleanups for the 4.9 cycle. 2016-09-14 20:42:03 +02:00
ti-adc081c.c iio: adc: add missing of_node references to iio_dev 2016-07-03 13:40:08 +01:00
ti-adc128s052.c iio: adc: add missing of_node references to iio_dev 2016-07-03 13:40:08 +01:00
ti-adc161s626.c iio: adc: ti-adc161s626: add regulator support 2016-09-27 20:33:03 +01:00
ti-adc0832.c iio: ti-adc0832: add triggered buffer support 2016-10-23 19:34:25 +01:00
ti-adc12138.c iio: adc: add ADC12130/ADC12132/ADC12138 ADC driver 2016-08-31 18:10:36 +01:00
ti-ads1015.c Second set of iio new device support, features and cleanups for the 4.9 cycle. 2016-09-14 20:42:03 +02:00
ti-ads7950.c iio: adc: New driver for TI ADS7950 chips 2016-12-03 09:57:21 +00:00
ti-ads8688.c iio: devm_regulator_get_optional never returns NULL 2016-09-05 21:09:38 +01:00
ti_am335x_adc.c drivers: iio: ti_am335x_adc: add dma support 2016-11-05 17:32:05 +00:00
twl4030-madc.c iio: adc: twl4030: Fix ADC[3:6] readings 2015-10-03 10:27:18 +01:00
twl6030-gpadc.c iio: adc: twl6030-gpadc: Fix module autoload for OF platform driver 2015-09-23 20:23:24 +01:00
vf610_adc.c iio:core: timestamping clock selection support 2016-06-30 19:41:38 +01:00
viperboard_adc.c
…
xilinx-xadc-core.c First set of new device support, features and cleanups for IIO in the 4.5 cycle 2015-12-01 09:13:29 -08:00
xilinx-xadc-events.c iio:core: timestamping clock selection support 2016-06-30 19:41:38 +01:00
xilinx-xadc.h iio: adc: xilinx-xadc: Push interrupts into hardirq context 2015-08-16 10:51:27 +01:00